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Author Topic: Grounding an RCA cable  (Read 2723 times)

Mytch

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Grounding an RCA cable
« on: December 13, 2005, 05:55:31 pm »

I just acquired 2 old radio units, a modulator and a processor, but both require a ground and I use RCA for my audio.  Without it I get a buzz, when I use myself as the ground the buzz is gone.  How can I ground my connection?  (Without going out and buying the Henry Matchbox...)  Thank You.....mytch
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John Roberts {JR}

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Re: Grounding an RCA cable
« Reply #1 on: December 13, 2005, 06:22:35 pm »

Mytch wrote on Tue, 13 December 2005 16:55

I just acquired 2 old radio units, a modulator and a processor, but both require a ground and I use RCA for my audio.  Without it I get a buzz, when I use myself as the ground the buzz is gone.  How can I ground my connection?  (Without going out and buying the Henry Matchbox...)  Thank You.....mytch


Try using either a .1 or .01uF ceramic disc cap and maybe a 47k resister connected to each other in parallel and then in series with your ground. Sounds like you may have a ground loop or ground potential difference. Note: this will not make an effective safety ground between units so they will need to be bonded to ground separately.

JR
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Austin Parker

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Re: Grounding an RCA cable
« Reply #2 on: May 23, 2006, 12:53:26 am »

Are you saying that the equipment needs a ground, or you don't know how to ground an rca cable? If it's of the later, ti-low-ta-grund (tie low to ground).
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Austin Parker

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